Fabric-stretching machine



Aug. 19, 1930. I v E s 1,773,232

FABRIC STRETCHING MACHINE Filed Nov. 25, 1929 Patented Aug.-19,*1930 2] UNITED; STATES PATENT OFFICE mA'rHiAs Iimvnnns, or Morten, GEBMANY- r r'ABRIc-srnmcnme mcmim Y Y Application filed li'ovember 25, 1929, em nate, and in Gama -m 2a, 1927.

This invention relates to a device for fabmeans the distribution of the folds will be ric stretching and drying machines for loosemore uniform than in the known apparatus,

- ly and foldedly introducing the fabric into as the distribution of the folds is the more t e holding and stretching elements in which uniform, the smaller the distance between the 5 the fabric feeding elements are driven point at which the spike wheel delivers the 55 quicker than the guiding chains. e material and the point at which the material The loose fold producing spiking on of is gripped by the pressing brush.

the fabric has-for its object to .permit of The fabric stretching device, according to shrinking of the fabric warp during the the invention, may also be used in conjuncwidth stretching which is stretched and ex-- tion with steaming devices, boiling devices, 0

tended in all the more important working cylinder presses and-the like and with all stages during the manufacture and'dressing other other machines in which a width of the fabric and to obtain the correct stretchstretching with shrinkage of the-warp is-deing proportion in the formation of the warp sirable or advantageous, in order to compenand weft and therefore to produce a fabric sate'for the-stretching of the fabric warp, as which meets the most exigent requirements caused by the ull in the direction of the with regard to elasticity and freedom from length of the fa ric at every working operacrushing. tion,.which in the machines mentioned was A device of ,the above, kind is already 'cted hitherto at the introduction into the known, in which the feeding device, working machine by pulling out the material by'hand. 70

. at high speed consisting of two rollers pressed Two embodiments of the invention are ilagainst one another, grips the fabric inside lustrated byway of example in the accomthe selvedge. 'panying drawing in which: By this means the material is h0WeVf Fig. 1 shows diagrammatically a fabric pressed, this being not permissible with a feeding device, 76.

number of fabrics. Moreover the material Fig 2is a top 'plan view of one of the ,can slide between the rollers. As further guiding chains.

- with the known arrangements the material Fig. 3 shows another form. of construction is gripped by the feeding rollers, not'on the of the fabric feeding device. a

selvedge but inside same, this selvedge, owing The lower part of the guiding chain a, a0

-' to the 'formationof folds, is loose, whereby which runs over a lower chain wheel a, has the feeler ofgthe automatic material feed canspikes a? by means of which the chain conveys not work perfectly, especially, if the selvedge, the material. Two such chains are arranged owing to the formation of folds, folds 111- in the same inclined plane and at a distance wards. j l apart correspondin to the width of the'fab- 85- According to the invention the feeding ar -ric. The spiking o the selvedges of the fabrangement is composed of a spike wheel gripric t is effected in both guiding chains by a ping only the selvedg'e of the fabric as the pressure brush 1).

spikes engage with the selvedge. Conse- In front of thebrush b" a-gmde wheel 0 40 uently the material is not ressed, it cannot having carrying spikes is arranged, which ro- 90 s ip and the selvedge is he d taut up to the tates in the direction indicated by'the arrow. point at which the spikes of the stretching The spike wheel "0 and the pressing brush b chain enga e so at the working of the are arranged in the same vertical plane as.

-- automatic eedingdevice is not aflected.- the feeding chain a, but theyare, 1n theweft Further a-cam-shaped guide is arranged in direction of the fabric, of shghtly' greater on "the' iingplar space between the accelerated width than the chains. -The wheelq is mov spike w eel and the following pressing brush ingislightly ahead of the gu de chain a, the so that the fabric moving between the spike upper part of which, carrying the fabric, wheel and the brush is led to the oint at moves in an inclined upwarddirec tion from which spikes of the chain engage. y this the sprocket wheera' in the direction of the arrow. Owing to the moving ahead'of the feeding wheel a with regard to the guiding ,chain' a, a fine ifoldin of the fabric takes place which enables a s rinking of the fabric warp durin the width stretching.' The dis-. tribution of the folds' in the longitudinal direction of the fabric is the more uniform, the less the distance is between the point at which Y the spike .wheel 0 delivers the fabric and 6 the oint at which the fabric is ripped by theb irection as the wheel 1:. In or er'to make this distance 7 :as small as possible, a cam-shaped guide d is rovided, which fills the lower angular garb) rush I) rotatin in. the same etween the'spike wheel. a and the brush and brings .the fabric to the point of the I shortest distance betweenthe wheel a and the brush b. The guide (1 projects on both sides inthe direction'of the .weft of the fabric be- .yondsthe guiding chain or the spike wheel and the brush, and is therefore wider than these, so as to offer agood support for the fabric. Instead of the arrangement shown inFig. 1, in which the'fabric is fed to the guide (1 '25 y from below, the fabric may also be led round be with a car-d1 wit the moving ahead spike wheel, as shown in Fig. 3, in such a manner that it is in engagement with this wheel along a longer stretch and runs o'fl' from above onto theguide d.

On machines, in whichsthe displacement'of the stretchin chains is effected automatically through, thei-nown material feeding device with feeler disengagement, the removing ahead feed wheels are arranged directly be- 85 hind the feelers, as the section of fabric must be stretchedin front of the feelers in order to ensure a proper working of the feelers;

For-the cam-sha ed guide iece for'exam- 1e two'bolts runnm in ballf ari'ngs might 4e substituted, and-t e pressing brush may n cover instead of bl-idles so as to p 'uce an absolutely niform folding of the selvedges.

,I claim:

I a a device for fabric stretching and dryifi machines for feeding the fabric into the hol ing and stretching e ement in which the feeding of the cloth is efiected more quickly than. that of the guiding chains so as to form 6.0 folds, comprising -incombination with said chains rovided with ikes, a spike wheel, adap to grip the fa ric only on the selvedges a pressing brush ada ted to press; a I the fabric onto e spikes o the guiding chains, and a cam-shaped guide arrangedin the angular gap between said spike wheel and said brush adapted to feed the fabric from said spike wheel to said b h. Intestimony .whereof I my signaturer ata'rmas LENDERS; I 

